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Another Twitter user wrote: "Of all the mild public order offences to commit, this is the best. Keep up the good work, Diane."

Another said: "Dear Diane, I have to say I'm deeply shocked. You must be the first person in recorded history ever to apologise for drinking on TFL and also to discover that an M&S mojito counts as alcohol".

One Twitter user wrote: "the NHS and drinking tins on trains are the only two noble and honourable british institutions. I stand with diane".